Expected

Responsive action SHOULD be taken soon (within next hour)

Indiana Special Weather Statement | Effective 05/18/2026 09:52

At 1251 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from Chrisman to 7 miles east of Marshall. Movement was northeast at 40 mph. HAZARD...Wind gusts of 50 to 55 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Terre Haute, Clinton, Newport, West Terre Haute, Fairview Park, Montezuma, Rosedale, Dana, Universal, Mecca, Fontanet, Blanford,

Connecticut, Massachusetts, Rhode Island Heat Advisory | Effective 05/18/2026 09:57

* WHAT...Heat index values up to 96 expected. * WHERE...Much of Southern New England, except for the eastern slopes of the Berkshires, the Rhode Island and Massachusetts South Coast, Cape Cod and the Islands. * WHEN...From 11 AM Tuesday to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures, a moderate degree of humidity with little relief Tuesday night may cause heat illnesses. * ADDITIONAL DETAILS...This is the first multi-day period of hot temperatures. Those not yet accustomed to hot temperatures with a

Alaska Red Flag Warning | Effective 05/18/2026 09:59

The National Weather Service in Fairbanks has issued a Red Flag Warning, which is in effect from noon to 10 PM AKDT Tuesday. * AFFECTED AREA...Delta Junction. * TIMING...From noon to 10 PM AKDT Tuesday. * WINDS...South 20 to 30 mph with gusts up to 55 mph. * HUMIDITY...As low as 23 percent. * TEMPERATURES...Highs around 60. * IMPACTS...Critical fire weather conditions are expected due to a combination of low relative humidity, gusty southerly winds, and dry fuels. Any new fire starts or existing fires may spread rapidly.

Indiana Special Weather Statement | Effective 05/18/2026 09:24

At 1223 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Georgetown to near Vermilion. Movement was northeast at 50 mph. HAZARD...Winds in excess of 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Crawfordsville, Clinton, Rockville, Veedersburg, Newport, Fairview Park, Cayuga, Montezuma, Waynetown, Linden, New Market, Dana,

Utah Freeze Warning | Effective 05/18/2026 09:26

* WHAT...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Eastern Juab/Millard Counties, Sanpete Valley, Sevier Valley, Western Millard and Juab Counties, Cache Valley/Utah Portion, Wasatch Back, Western Uinta Basin, and Southwest Utah. * WHEN...From midnight tonight to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

Utah Freeze Warning | Effective 05/18/2026 09:26

* WHAT...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Castle Country. * WHEN...From midnight tonight to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold. Drain in-ground sprinkler systems and cover above ground pipes.

Michigan Special Weather Statement | Effective 05/18/2026 09:38

At 1238 PM EDT, Doppler radar was tracking a strong thunderstorm over Manistee, moving northeast at 30 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Manistee, Arcadia, Eastlake, Kaleva, Onekama, Bear Lake, Copemish, Pierport, Wildwood, Norwalk, Parkdale, Orchard Beach State Park, and Pere Marquette State Forest.

Guam, Northern Mariana Islands Rip Current Statement | Effective 05/18/2026 09:39

* WHAT...Dangerous rip currents. * WHERE...East facing reefs of the Marianas. * WHEN...Through this afternoon. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...Elevated trade swell is producing surf up to around 9 feet and a high risk of rip currents along east facing reefs through this afternoon. Rip currents will be life threatening. If caught in a rip current, relax and float. Don't swim against the current. If

Wyoming Winter Storm Warning | Effective 05/18/2026 09:42

* WHAT...Heavy snow. Additional snow accumulations 1 to 5 inches. Winds gusting as high as 50 mph. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be difficult due to a combination of wind and falling snow. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit

Wyoming Winter Weather Advisory | Effective 05/18/2026 09:42

* WHAT...Snow expected. Additional snow accumulations up to 1 inch. Winds gusting as high as 55 mph. * WHERE...Flaming Gorge and Rock Springs and Green River. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be difficult, especially along Interstate 80. The hazardous conditions could impact the Monday evening commute. Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit
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